Landing-brake for aeroplanes



J. D. DENSON.

LANDING BRAKE FOR AEROPLANES.

. APPLICATION FILED JULY 8,1920- I 1,360,901 Patented Nov. 30, 1920.

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LANDING BRAKE FOR AEROPLANES.

Patented Nov. 30, 1920.

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attorney JESSIEI). -DENSON, F GRAND RAPIDS, MICHIGAN. I 1

LANDING-BRAKE FOR AEROPLANES.

Specification of Letters Patent.

Patented Nov. 30, 1920.

Application filed July 8, 1920. Serial No. 394,739.

To all whom it may concern.

Be it known that I, Jess e D. DENSON, a citizen of the United States, residin at Grand Rapids, in the county of Kent, tate of Michigan, have invented certain new and useful Improvements in Landing-Brakes for rleroplanes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This lnvention relates to new and useful improvements in aeroplanes and particu larly to landing means therefor.

The principal object of the invention is to provide a novel and improved attachment for an aeroplane by means of which the speed in landing can be greatly checked, and the usual long glide along the ground, after landing, obviated.

Another object is to provide novel and improved attachment for an aeroplane of the monoplane type whereby the aeroplane can gotten off the ground in less time than heretofore.

Other objects and advantages will be app rent from the following description when ti en in connection with the accompanying drawing.

in the drawing:

Figure 1 is a front elevation of an aeroplane of the monoplane type showing the invention applied thereto.

F 2 is a side elevation of the same, the landing planes being in position to check the landing speed of the aeroplane.

F 3 is a bottom plan view of the same.

Referring particularly to the accompanying drawing, 10 represents the fuselage of the aeroplane to which are secured the sustaining planes 11, the aeroplane being of the moncplane type. in each side of the forward portion of the fuselage there is a longitudinally extending slot 12, disposed through the slots, transversely he fuselage, and with its ends projecting ond both sides of the fuselage, is a shaft Mounted transvesely of the fuselage, arwardly of the shaft 13, is a crank shaft l-l, the ends of which project beyond the opposite sides of the fuselage. lorlzontal, outwardly extending planes 15 are centrally pivoted on the projecting ends of the shaft 13, and in the rear ends of the said planes the ends of the crank shaft 14 are engaged for rocking movement.

Pivotally connected to the lower sides of the sustaining planes are the brace arms 16,

the lower ends of which are pivotally connected to the ends of the shaft 13.

Mounted in the fuselage is a controlling lever 17 which is connected by a link 18 to the crank portion of the shaft 14, whereby, upon movement of the lever the shaft may be rocked and the landing planes l5 moved upwardly and forwardly, or downwardly and rearwardly.

Thus when the aeroplane is flying in the air, at an elevation, or near the ground, as in making a landing, the planes 15 are shifted and tilted downwardly and rearwardly, with the result that the air will strike the under faces thereof and cause the rear end of the aeroplane to rise and the forward end to be depressed, with the result that landing speed will be checked to such a point that the usual long runs, after reaching the ground, are reduced to a minimum.

' hat is claimed is:

l.' The combination with the fuselage and sustaining plane of an aeroplane, the former having longitudinal slots in its opposite sides, of a transverse shaft disposed through the slots. a crank shaft mounted transversely of the fuselage, landing planes pivotally mounted centrally on the transverse shaft and pivotally connected to the crank shaft, and means for rocking the crank shaft to rock the landing planes.

2. The combination with the fuselage and sustaining plane of an aeroplane, the former having longitudinal slots in its sides, of a shaft disposed for slidable movement longi tudinally of the slots and rockable therein, speed checking planes mounted on the ends of the shaft for rocking movement thereon and slidable movement therewith, a crank shaft for accomplishing the rocking and sliding movement of the shaft, and braces connected to the ends of the rock shaft and with the sustaining plane.

In testimony whereof, I ailix my signature, in the presence of two witnesses.

JESSIE D. DENSON. lVitnesses FAY W. Enno, 7M. GELDERSMA. 

